In the context of an adjective used to describe pain, we can look at the answer choices:
Silent pain seems like an odd choice for someone to notify a doctor about, so that is probably not the answer. 
Thoughtful does not describe pain. 
Responsive does not describe pain. 
Severe pain would be a reason for someone to notify a doctor, so this is likely the correct answer choice. 
 
        
                    
             
        
        
        
Where is the story or other info?
        
             
        
        
        
Answer:
B. The mockingbird symbolizes the softer side of nature, because unlike most wild creatures, it doesn't harm human habitat.
Explanation:
Symbols help us connect ideas from a text with previous real life knowledge or things that most likely represent the same to a big audience.
On the excerpt, mockingbirds are represented as innocent creatures that 'don't do anything but to bring joy'. As said on answer B, mockingbirds as nature doesn't harm us, but only is in charge of give resources in order for us to have a joyful life. 
 
        
             
        
        
        
Answer:
1. You ( not be ) ..are not of..... any use to me unless you learn to type
2. If I ( have ) ...will have.. enought money , I will buy a new skateboard 
3.She will be angry if you ( not , tell ) ..do not tell.... the truth
4.If they take their medicine , they (feel) ..will feel... better
5 . We ( not , get) ...do not get. good marks if we don't learn hard 
6.If he ( not , go) ...does not go. back now , he will be late
7.They ( not / let).... will not let. you in if you come late 
8.If you ( not/go) ..do not go.. away , I'll send for a policeman